The ErFemto-780 Elite is a modular near-infrared fiber femtosecond laser with a typical output wavelength of 780nm, a pulse width of less than 100fs, a spectral width of greater than 9 nm, and a replay frequency of 80MHz. The light source is based on the technology of automatic mode-locking pulse, low nonlinear and low noise fiber amplification, high precision dispersion compensation and high efficiency frequency conversion. It realizes the miniaturized integrated design of laser opto-electromechanical system and has high reliability and stability. In addition, the same laser also supports 780/1560nm dual-wavelength synchronous output function, repetition frequency is optional in the range of 10-100MHz, to meet the needs of a variety of application scenarios. 780nm femtosecond fiber laser models: ErFemto-780 Elite40 and ErFemto-780 Elite7013